Midterm Status C2c Cc Coast to Coast Climate Challenge

COAST TO COAST CLIMATE CHALLENGE MIDTERM STATUS C2C CC COAST TO COAST CLIMATE CHALLENGE In Denmark, the thought about climate changes collaborate with each other, with local supply is not new. We have talked about the climate for companies, private companies and knowledge decades and we know what the major increase institutions collecting and analysing new knowl- in global temperatures will mean to us. We have edge and data on climate issues. already begun to see many of the changes. In The Coast to Coast Climate Challenge consists of Denmark, the climate changes will lead to larger 24 sub-projects on sea, fjord, streams, rainwater amounts of rain than we have been used to. Al- and groundwater as well as governance, tools and ready now, we see more and heavier rain all over innovation. We are halfway through the project the country. period and the majority all of the 24 sub-projects Residential areas have problems draining off the are ongoing and some have already reached their water, big and small streams overflow, agricultural goal. This report is a status of the progress of all fields are flooded and communities along the 24 sub-projects as well as plans until the project coast and fjords are hit more often by heavy is concluded in December 2022. storms and flooding. At the same time, sea and groundwater levels are rising. All of the 98 municipalities in Denmark will some- how have to manage increasing amounts of water. The specific climate problems differ from one geographical area to the other, but the challenge is basically the same. Climate problems are, however, heavy burdens to lift locally. Water knows no boundaries and it makes sense to solve the problems in collaborations across municipality and city limits – and across professional boundaries. The C2C CC project is supported by the EU Since January 2017, the Coast to Coast Climate LIFE programme with DKK 52 million. Challenge (C2C CC) has gathered all municipali- The project runs from January 2017 to De- ties in Central Denmark Region in an ambitious cember 2022 and is a collaboration between climate project, which will strengthen the region 31 partners and 25 supportive stakeholders. when meeting future climate challenges. The EU Other stakeholders will continuously join funded project works with innovative solutions to during the project period. protect city and rural areas to create higher value for citizens. The 31 partners are primarily municipalities in Central Denmark Region, local supply The C2C CC connects the majority of the munici- companies and universities. palities in Central Denmark Region and help them C2C CC 3 C8 HÅB TO HÅB – HEDENSTED MUNICIPALITY The area between Glud Håb and Håbet south of who broadly represent the area from Glud Håb Horsens Fjord is a beautiful and attractive natural to Håbet have the opportunity to tell their own resort. Originally, the area consisted of sea and is- story and share perceptions of the problems they lands, but the area has since been embanked. To- encounter in the area. day, the area is pressured by increasing amounts Inspired by the Dutch tool 3Di, Hedensted Munici- of water from both the sea and two stream pality has developed a hydraulic model visualising systems; following a long period with heavy rain, how rain and sea water run through the land- the amount of water is already now breaking all scape. The municipality presented this visualis- records. ation at a meeting also providing a broad descrip- This is a huge challenge to farmers, summer cot- tion of the area. The many different stakeholders tage owners, permanent residents and compa- from the area had the opportunity to tell how this nies. Moreover, it limits use of the natural resort description and the visualisation of the water for spare time activities. Hedensted Municipality are consistent with their reality. Do they see the has initiated the Coast to Coast Climate Challenge water collecting at the same places? project Håb to Håb, gathering all stakeholders in Stakeholders were invited to suggest solutions to the area to find common solutions to the climate be incorporated into the model. This process was problems caused by the water from both the sea supported by Aalborg University, which together and the hinterland now and in the future. with the other partners developed a method to The area from Glud Håb to Håbet is in many identify possible added value and include this in ways a historical area and it was thus obvious for solutions. Hedensted Municipality to collaborate with By connecting the suggested solutions to the Moesgaard Museum to benefit from the knowl- technical model, it is possible for the municipality edge the museum has gained through the to assess which suggestions may be implemented. sub-project C24, Climate history | Cultural history. In sub-project C24, Moesgaard Museum and In this sub-project, Hedensted Municipality has Aarhus University have studied the association attached great importance to listen to citizens’ between local identity and historical narratives, suggestions and find solutions that would create and how to use this association to engage citi- added value. It is important to stakeholders in zens in climate adaptations in the local area. the local community to benefit from the climate adaptation. Nature must be valuable for the local In collaboration with Moesgaard Museum and citizens and possible solutions should not only be several local museums, Hedensted Municipality focused on attracting more tourists to the area. started making a cultural history description of the area. They invited selected stakeholders and open groups to walk the fields and participate in bus trips where museum staff and nature guides told about the history of the area. The stakeholders Scan to watch interview about C8 C2C CC 5 C9 THYBORØN CHANNEL AND THE WESTERN LIMFJORD The area around the western Limfjord is one of level the fjord, the surrounding towns will be the most vulnerable areas in Denmark when it exposed to heavy flooding in the future. comes to climate changes. In heavy storms, the So far, the sub-project has been very focused on area around the Limfjord is threatened by flooding model calculations and simulations of the effect and in the surrounding towns the water level may of narrowing the Thyborøn Channel. The next be two meters above the normal level in rough step will be to launch and not least finance the weather. This will probably only be worse in the solution. The narrowing of Thyborøn Channel will future with increasing sea levels, frequent heavy amount to DKK 700 million and in the next phase rain and storms. of the project, different financing models will be Sub-project C9 is a collaboration between the investigated. It may be necessary to consider dif- seven municipalities around the Limfjord and ferentiated payment if the effect of the narrowing municipal water supply companies trying to find is not similar in all of the seven municipalities. common solutions to the climate changes in the Seemingly, the solution will not have an equally area now and in the future. In addition to working beneficial effect in Løgstør as in e.g. Lemvig and across municipal borders, the sub-project also Thyborøn. In most areas, the water level up until stretches into North Denmark Region where 2060 can be maintained at the same level as today; three of the seven municipalities are located. this may, however, only be possible until 2050 in Løgstør. The 14 municipalities and supply com- In the first phase, the 14 partners in collaboration panies hope the government and other investors with the consultancy Rambøll have mapped the find it valuable to contribute to the project. This is effect on the water level of narrowing the channel one of the tasks they start to look into now. between Thyborøn and Agger. This has also provided an overview of the consequences for The next big step in the next project phase is to the environment and the nature of the western put out the tender. The partners must find an Limfjord. engineering company, but they are also looking for landscape architects to participate in the pro- If the sea level increases by 24 centimetre as ex- ject. Instead of just putting stones into the water, pected up until 2060, more water from the North which is the traditional solution, the municipalities Sea will be pressured into the Limfjord during hope that the construction can create added value storm surges. By extending the two groynes in for the citizens and tourists in the area. Thyborøn and Agger, the channel will be reduced to an opening of 250 meters. If the project is completed, the water level in the Limfjord will not exceed two meters up until 2060. If the municipalities do not do anything to keep down the water Scan to watch interview about C9 C2C CC 7 C10 THE GRENAA STREAM AND HINTERLAND The Grenaa Stream is seven kilometres long and have worked with several hydraulic models. It runs through the area of Djursland and Grenaa has been a huge task to gather all the different and flows into the Kattegat. Every day, the stream professions with expertise in specific areas such leads large amounts of water from the 466 as drinking water or watercourses. The different square kilometres of hinterland into the sea. In calculation models are combined to give as precise storms, the water from the Kattegat is pressured a picture as possible of the reality. In the first into the Grenaa Stream, the water in the stream phases of the sub-projects, the municipalities cannot flow out and Grenaa risks being flooded.

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